15933790666 has 8 divisors (see below), whose sum is σ = 23943140064. Its totient is φ = 7952743980.

The previous prime is 15933790633. The next prime is 15933790673. The reversal of 15933790666 is 66609733951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7074270 + ... + 7076521.

It is an arithmetic number, because the mean of its divisors is an integer number (2992892508).

Almost surely, 2^15933790666 is an apocalyptic number.

15933790666 is a deficient number, since it is larger than the sum of its proper divisors (8009349398).

15933790666 is a wasteful number, since it uses less digits than its factorization.

15933790666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151356.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The spelling of 15933790666 in words is "fifteen billion, nine hundred thirty-three million, seven hundred ninety thousand, six hundred sixty-six".